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IMPROVED TUYERE.:

*wv- The Schedule referred toin these Letters Patent and: making part at the lame.

To all 'whom it may concern:

tuyere, for convenience in heating large work, or two large'pieces for welding.

The drawing represents a longitudinal section of my improved tuyere.`

A represents the body of the tuyere, which I design to make by casting in one piece.

' B represents the blast-pipe, passing through the water-cylinder, C, and delivering the blast, at D, to the side of a f ire.

Itis provided with a branch-pipe, E, and a three- Way cock, F, so arranged that the. blast may be divided betweenthe two pipes, or it may be confined to either.

The branch-pipe leads into the vertical air-chamber G, having a grate, H, on the top, whereon a second fire may be maintained at the same time that another flre is being used at D.

Water is maintained around the wall of the chamber G, by means of a supply delivered within the outer wall, I, through the pipe K, and conveyed through the pipe L to the cylinder M, surrounding the pipe B, and out through the pipe N.

The top surrounding the mouth of the chamber G is provided with recesses, for the reception of the gratebars, thesaid recesses beingl formed when the casting is made.

Below the chamber G a valve, or gate is provided, in the usual manner, to' be opened for the removal of the cinders.

I claixnvas new, and desire to secure by Letters Patent- The improved apparatus herein described, consisting of the water-chambers I and M, blast-pipes B andV E, in chamber G, fire-grate H, and three-Way cock F, all substantially as described.

The above specification of my invention signed by me, this 26th day of December, 1868.

' JOHN C. WILSON.

Witnesses:

F. OALVERT,

his .4 WM. Klang.

mark. 

